I'm not bashing the microchip idea, I do however think that pet owners put more faith in them than they should. My own vet has issues with microchips but does it after her hubby who works the business end of her clinic spent many months convincing her that profit margins would increase by huge numbers by offering such a service. She now offers it, but for the amount of chips that she has actually done, she's not impressed with her profits from it.
So the question is, who really benefits? Microchips can migrate beyond the skin. Exploritory surgeries have found them all over the place.
http://www.k9magazinefree.com/k9_per...iss23p10.shtml
http://www.apapets.org/micro2.htm
http://www.hsus.org/pets/issues_affe...icrochips.html
http://www.animalsheltering.org/reso...ards_usda.html
http://www.apapets.com/micro.htm